Mercury outboard spare part 8M0204942 (ISOLATER). Supplied by Dimo Marine for wholesale and export — genuine and quality aftermarket options available.

Fits 200 HP 4.6L V8 Pro XS, 225 HP 4.6L V8 Pro XS, 225 HP 4.6L V8 SeaPro, 350 HP 5.7L V10 Verado, 250 4.6L V8 APX, 300 ROS HP 4.6L V8 15 Inch Midsection Racing, 300R HP 4.6L V8 15 Inch Midsection Racing, 300R HP 4.6L V8 AMS Racing, 350 HP 5.7L V10 Verado SeaPro, 360 HP 4.6L V8 APX, 400 HP 5.7L V10 Verado, 400R HP 5.7L V10 Racing, 425 HP 5.7L V10 Verado, 500 HP 7.6L V12 SeaPro, 600 HP 7.6L V12 Verado. Select a model tag above to open the exploded diagram and confirm the position.

Part Specifications and Installation Reference

Mercury outboard part 8M0204942 (ISOLATER), documented in 14 exploded diagram location(s), across the 4-STROKE-EFI series.

SeriesModelSerial rangeREFQtyDiagram
Mercury 4-STROKE-EFI200-hp-4-6l-v8-pro-xs2B529482 UP41View
Mercury 4-STROKE-EFI250-4-6l-v8-apx1E054548 UP41View
Mercury 4-STROKE-EFI300-ros-hp-4-6l-v8-15-inch-midsection-racing1E054618 UP41View
Mercury 4-STROKE-EFI300r-hp-4-6l-v8-15-inch-midsection-racing1E054618 UP41View
Mercury 4-STROKE-EFI300r-hp-4-6l-v8-ams-racing1E081459 UP41View
Mercury 4-STROKE-EFI350-hp-5-7l-v10-verado3B266064 THRU 3B57644841View
Mercury 4-STROKE-EFI350-hp-5-7l-v10-verado3B576449 UP41View
Mercury 4-STROKE-EFI350-hp-5-7l-v10-verado-seapro3B266064 UP41View
Mercury 4-STROKE-EFI360-hp-4-6l-v8-apx1E054247 UP41View
Mercury 4-STROKE-EFI400-hp-5-7l-v10-verado3B266064 UP41View
Mercury 4-STROKE-EFI400r-hp-5-7l-v10-racing3B272954 UP41View
Mercury 4-STROKE-EFI425-hp-5-7l-v10-verado3B576447 UP41View
Mercury 4-STROKE-EFI500-hp-7-6l-v12-seapro3B060047 UP41View
Mercury 4-STROKE-EFI600-hp-7-6l-v12-verado3B060047 UP41View

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Appears in diagrams of these models

  • 200 HP 4.6L V8 Pro XS
  • 225 HP 4.6L V8 Pro XS
  • 225 HP 4.6L V8 SeaPro
  • 350 HP 5.7L V10 Verado
  • 250 4.6L V8 APX
  • 300 ROS HP 4.6L V8 15 Inch Midsection Racing
  • 300R HP 4.6L V8 15 Inch Midsection Racing
  • 300R HP 4.6L V8 AMS Racing
  • 350 HP 5.7L V10 Verado SeaPro
  • 360 HP 4.6L V8 APX
  • 400 HP 5.7L V10 Verado
  • 400R HP 5.7L V10 Racing
  • 425 HP 5.7L V10 Verado
  • 500 HP 7.6L V12 SeaPro
  • 600 HP 7.6L V12 Verado